Employer health costs may go up about 9% in 2011, and the typical deductible will be $400 or more.

The Health Research Institute at PricewaterhouseCoopers L.L.P., New York, is basing those predictions on results from a survey of about 700 employers.

The medical cost increase rate may be down from 9.5% this year, the institute says.

A majority of insured workers will have a deductible of $400 or more for this first time because of increased use of high-deductible health plans and a shift to higher deductibles and out-of-pocket limits at traditional plans, the institute says.

About 42% of the employers surveyed said they will increase employee contributions for health insurance coverage, and 41% said they will increase deductibles and co-payment levels.